vue vue-style-loader !css-loader错误
最近在学习vue框架，使用webpack打包vue项目，在执行npm run start的时候 出现如下错误：
This dependency was not found:
- !!vue-style-loader!css-loader?{“minimize”:false,“sourceMap”:false}!../…/node_modules/vue-loader/lib/style-compiler/index?{“vue”:true,“id”:“data-v-1d57e5ea”,“scoped”:false,“hasInlineConfig”:false}!stylus-loader?{“sourceMap”:false}!../…/node_modules/vue-loader/lib/selector?type=styles&index=0!./a.vue in ./src/components/a.vue
To install it, you can run: npm install --save !!vue-style-loader!css-loader?{“minimize”:false,“sourceMap”:false}!../…/node_modules/vue-loader/lib/style-compiler/index?{“vue”:true,“id”:“data-v-1d57e5ea”,“scoped”:false,“hasInlineConfig”:false}!stylus-loader?{“sourceMap”:false}!../…/node_modules/vue-loader/lib/selector?type=styles&index=0!./a.vu
解决方法：
npm install stylus-loader css-loader style-loader --save-dev
npm install sass-loader --save;
npm install node-sass --save;
注意，一定要在项目根目录下安装哦！！！